The stock Graphene SMS app sucks, it lacks basic features and customization that standard SMS apps have.
I see no real need to keep it for security and privacy reasons unless someone can share legitimate information about the application for a need to keep it that is note worthy I am all ears to be educated.
I’d like to explore other privacy focused SMS alternative apps. Not services. Just the app. Thanks! I hope this helps others too. I can’t be the only one! I chose top 3 because I would rather not try 50 apps. Just the cream of the crop.
I’m looking for this too and am interested in any answers. The stock GrapheneOS messaging app is okay for just text messaging for me, but I’d also like to be able to have an interface to it on my PC, either in the web browser or as a separate app. Google Messages for Web is really the only thing I miss from enshittified Google Android. I wish Signal didn’t remove their capabilities for making Signal the default SMS app on phones, but they likely had good reasons to do so.
I’ll share this post on the Fediverse; maybe we’ll get more traffic and thus more answers that way. To be honest, though, I’m not expecting anything that satisfies.